This range of blue slate roofing is imported from Spain. Various sizes of blue roofing slate available, and our blue roofing slate are all British standard. 24"/12" others sizes of blue roofing slate available. Roofing,slate,trusses,sandstone,yorkstone,building,slate,spain,blue,roofing slate materials,slate roofing,roof trusses,building trusses,slate roofing,slate roofing material,slate roofing tile,slate supply roofing,slate roofing product,recycled slate roofing,slate roofing supplier,importer roofing slate tile